Expansion chamber ratio differences in monocore vs k baffle

[eseaton]

I am no engineer but am interested in how the different sizes of expansion chambers affect performance and how these differences compare in monocores vs. k style baffles.
I know this is elementary to the experts but would appreciate an explaination.

Thank you.

eseaton

[ghostdog662]

An important consideration is barrel length. Longer the barrel = the smaller the expansion chamber you can get away with. When you look at commercial cans they design around the shortest length you will be placing them on for safety.

What caliber in-particular were you looking at ? Rifle / Pistol? Subsonic / full load etc.

[eseaton]

An important consideration is barrel length. Longer the barrel = the smaller the expansion chamber you can get away with. When you look at commercial cans they design around the shortest length you will be placing them on for safety.

What caliber in-particular were you looking at ? Rifle / Pistol? Subsonic / full load etc.

I will say let's look at how this all applies in the 22 l.r. round in general used on a carbine and average length pistol since there have been so many versions of suppressors made for this round. Without mentioning company names, I have a monocore and two other style baffle stacks in my cans. They are all different in respect to percentage of expansion area. I wondered if there is a "formula" for how this space is calculated.

Eseaton

[57fairlane]

the other variable in play is total length.

K baffle cores (from my experience) do best with a shorter length as opposed to a monocore. Every monocore I ever made/tested had lower FRP once you started adding length.

[PaulNoiseLess]

Hi,

Blast chamber sizing is not related to Baffles and/or Core being used.

It’s related to where you actually “receive” the Blast (maximum ignition point) and how you “welcome” it in terms of geometry (first baffle Geometry): K’s are not good for “welcoming” flames for the same reason they are good for managing gas.

Best,

Paul

[eseaton]

Hi,

Blast chamber sizing is not related to Baffles and/or Core being used.

It’s related to where you actually “receive” the Blast (maximum ignition point) and how you “welcome” it in terms of geometry (first baffle Geometry): K’s are not good for “welcoming” flames for the same reason they are good for managing gas.

Best,

Paul

I believe I understand what you mean by where the blast is received. I cannot picture why the shape of the initial baffle would make a bigger difference than possibly the initial expansion chamber. I have one can with almost no volume to expand in and two other designs totally different.

[SRM]

Now this is a good thread here.
.22 LR. An interesting caliber and its been around for ever. Oh, it`s just a 22 you say. I think the .22lr is the hardest to kill the frp of all the calibers. Ok, I`ll stop thinking and just respond. Centerfire pistol is prone to the frp also. It`s the low volume of the charge.

A few cans come to mind here; Kodiac, Element, Sparrow, and Specter.
The first two pretty much have a small blast chamber and negligeable frp. The last two have frp and have a large blast chamber compared to the first.

Just keep the gasses movin foreward and slow`em down slowly.

Another just popped into mind is the Xcaliber by Tittsworth. No frp and look at the size of the initial chamber! This is all speculative and is from what I`ve learned from the web. Afterall, there aren`t very many sites to check out NFA.